Re: Thanks for the reply Doug but .... - Dave - Video Asylum

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Re: Thanks for the reply Doug but ....

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In Reply to: Thanks for the reply Doug but .... posted by John C. - Aussie on July 27, 2002 at 00:40:37:

Dolby Digital typically packs the audio for an entire two-plus hour movie on DVD in one-quarter of the space used to master an uncompressed PCM CD. The loss varies according to program content, but can be be as great as 75% in many places. The DD bitrate is slightly higher on LD than DVD - try listening to the same material in both formats, you should hear a significant improvement with LD, especially in respect to "venue" or the ambient sound of the recording.
Meridian has been pushing for some time to implement their propriatary "MLP" lossless packing codec which can handle playback at rates of 16.44 24/96 on DVD with zero data loss and can go as high as 24/96 lossless (with some program time limitations) on dual-layer discs. It's a far better system in both theory and practice but so far Meridian has not be able to topple the Dolby Labs juggernaut.
If you have a processor with a pure analog pass-through, try playing a DVD encoded in pure PCM - it should sound superior to even the very best LD AC-3 replay. Ditto for dedicated Dolby 2.0 surround audio tracks (just be sure it isn't a 5.1 mixdown) - the bit rate only has to handle two channels instead of 5.1 and thus the signal is more robust.
BTW, if you really want to have fun, try cueing up a 5.1 DVD-Audio soundtrack with the DVD video - it's a mind-blowing experience. High-end HT rules!

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Follow Ups Full Thread

Topic - Lossy compression - how much is really "lost"? - John C. - Aussie 18:57:37 07/25/02 (9)

Re: Lossy compression - how much is really "lost"? A lot, IMO. - Tom Dawson 13:36:13 07/30/02 (1)

Re: Lossy compression - how much is really "lost"? A lot, IMO. - Tom Dawson 15:25:10 07/30/02 (0)

Re: Lossy compression - how much is really "lost"? - duglmac 20:26:22 07/26/02 (6)

Thanks for the reply Doug but .... - John C. - Aussie 00:40:37 07/27/02 (5)

DD ok for movies, not music - Lasermeister 04:54:40 07/29/02 (0)

Re: Thanks for the reply Doug but .... - Dave 13:37:00 07/27/02 (3)

Re: Thanks for the reply Doug but .... - Max 15:34:46 07/27/02 (2)

Same anomolies exist with DTS . . . - Auricle 07:44:59 08/01/02 (0)

Re: Thanks for the reply Doug but .... - Dave 17:36:38 07/28/02 (0)

Follow Ups

Re: Thanks for the reply Doug but .... - Dave 13:37:00 07/27/02 (3)

Re: Thanks for the reply Doug but .... - Max 15:34:46 07/27/02 (2)

Same anomolies exist with DTS . . . - Auricle 07:44:59 08/01/02 (0)

Re: Thanks for the reply Doug but .... - Dave 17:36:38 07/28/02 (0)

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